New 2026-10-01 version has been released

We are happy to announce the new v2026-10-01 (Chebyshev) version has been released.

As you know, our versions are named after well-known mathematical concepts. Chebyshev polynomials are the classic tool for approximating a function with the smallest possible worst-case error, which makes them a good fit for a release that fills many gaps between what Factorial does and what the API exposes.

Breaking changes

The most important breaking changes in this new version are:

• Integrations > Syncable item — the Reads all Syncable items endpoint has been removed. Use the Syncable states and Syncable sync runs endpoints described in the integration guides.
• Marketplace > Installation setting — the integration_id, file_numbers and establishment_codes fields have been removed from Reads all Installation settings. The resource now exposes integration_uuid, company_code, consultant_id, legal_entities, locations and payroll_concept_codes.
• Performance > Review process — the cycle_id field has been removed from Creates a Review process and from every Review process webhook payload.
• ProjectManagement > Subproject — name and status are now mandatory in Updates a Subproject.

Further improvements

The v2026-10-01 release adds new endpoints and expands existing resources across modules like:

• Compensations — Additional compensations, Employees compensations, Payroll results (including bulk create), Payroll runs, Cycles, and create/update for Concepts.
• Contracts — read endpoints for Contracts and Contract activity periods, Legal entity changes, and country_data_inputs, salary_currency and default_work_type on contract versions.
• Integrations — Sync runs, Syncable states and Syncable sync runs (read and bulk upsert).
• Procurement — Purchase order create/update, PO templates, template versions, field definitions, line items and field values.
• Teams — moving teams and memberships, plus team hierarchy fields (parent_team_id, depth, source_team_ids).
• Attendance — workplace and work area fields on shifts and edit timesheet requests, and reading a single Worked time.
• Time off — bulk deleting leaves, per-day leave durations, and French leave day counts.
• Payroll employees, IT management, Processes and Time settings — German employee data, asset categories, processes and split custom time range categories.

Don't miss out on the news it brings and read the detailed changelog.